Concrete wall



G. H. FORRESTER.

CONCRETE WALL. APPLICATION FILED oc. 5. 1920.

mma May 31, im

2 SHEETS-SHEET 2.

ear

FFEQE.

GEORGE HENRY FORRESTER, OF IVER, ENGLAND.

CONCRETE VJALL.

Application iled October 5, 1920.

To all whom t may concern:

Be it known that l, GEORGE lvl-.emv Fonnns'rnn, a subject of the King of Great Britain, residing at Riemore, liver, in the.

county of Buckingham, England, have invented a newl and useful improvement in Concrete lValls, of which the following is a specification.

This invention relates to devices especially applicable for use with hollow walls of concrete and the like and to means for reinforcing such walls. i

According to this invention a device for use in the construction of walls consists of a tube which may be of concrete or cement having a bar projecting from each side.

ln the case of a hollow wall, sets of two tubes are placed in alinement, one in each part of the wall, each tube being of a length corresponding to the width of each of the parts of wall respectively. The plates or boards which form the molds for the walls are tied together by rods which pass through the tubes which form distance pieces between the outer .and the inner plates or boards. After the concrete of which the walls are formed has set, the rods and the plates or boards are removed and screw bolts are inserted into the tubes passing through holes in the bars projecting from them and secured by means of nuts which engage with the bars. Ties securing the two walls together are thus formed.

Single walls may be made in a similar manner.

ln all cases holes may be made in the parts of the bars which project from the tubes and adjacent tubes are connected together by horizontal reinforcing bars, while vertical reinforcing bars are inserted through the holes.

The accompanying drawing illustrates a hollow wall made in accordance with this invention. Figure l is a horizontal section of a finished wall and Fig. 2 is a similar view of the wall in course of erection with the mold plates in position. Fig. 3 is a transverse vertical section of the wall in course of erection and Fig. t is a longitudinal vertical section. Fig. 5 is a perspective view of a partly finished wall. 0

Referring more particularly to Figs. 2 and 3, two sets of mold plates a are erected, the outer plates, to which are attached corrugated plates, being secured together by wooden bars b and rods c which pass Specication of Letters Patent.

Patented May 3i, i921.

Serial No. 414,792.

through tubes d, the rods c being secured by nuts e. The tubes el form the distance pieces between the inner and outer plates a, forming the mold for the two walls, and distance pieces f are inserted between the inner plates so that a space is left between the walls. Bars g extend from each side of the tubes cl and the bars g of adjacent tubes CZ are connected together by horizontal reinforcing bars j and vertical reinforcing bars le pass through holes in the bars g. i

After the mold plates have been erected concrete is poured in and when it is set the mold plates a are removed and screw bolts i (F ig. .1) are inserted into the tubes cl passing through holes in the bars g. The screw bolts Z are secured by nuts m which engage with the bars g, as shown in Fig. l.

Referring to Fig. 5, it will be seen that the mold plates of the upper part have been revmoved but that they are still in position on the lower part. The walls y', j, having an air space between them and the window frames in position can be clearly seen.

What l claim is l l. A device for use in constructing walls of concrete and the like consisting of a tube and a bar extending transversely through the tube having arms on opposite sides and a bolt receiving hole within the tube, one of said arms being provided outside the tube with a bar receiving hole.

2. rIhe combination of a ferro concrete wall, with a tube having a bar passing trans versely through the middle point of its longitudinal axis and projecting from each side thereof, and having holes in the projecting parts adapted to receive reinforcing bars.

3. The combination of a ferro concrete wall, with a tube having a bar passing transversely through the middle point of its longitudinal axis and projecting from each side thereof and having two holes in each projecting part, one hole adapted to receive a vertical reinforcing bar and the other to receive a horizontal reinforcing bar.

l. ln combination with a hollow wall, two tubes each having a bar projecting from each side and placed in alinement one in each part of the wall and a screw bolt passing through the tubes secured by a nut which engages with the bar.

5. In combination with a hollow wall, two tubes each having a bar projecting from each side and placed in alinement one in each part of the wall, a screw bolt passing through the tubes secured by a nut which engages with the bar and horizontal reinforcing bars secureol to the bars projecting from adjacent tubes.

6. In combination with a hollow wall, two tubes each having a bar projecting from each side and placed in alinernent one in each part of the wall, a -screw bolt passingl through the tubes vsecured by a nut which engages with the bar and` vertical reinforcing bars passing through holes in the bars projecting from the tubes.

7. ln combination with a hollow wall, two

each side and placed in alinelnent one in vcach part of the wall, a screw bolt passing through the tubes secured by a nut which engages with the bar, horizontal reinforcing bars secured to the bars projecting from adjacent tubes, and vertical reinforcing bars passing through holes in the bars projecting' from the tubes.

in testimony that I claim the foregoing as my invention I have signed my name this 17th day of August, 1920.

GEORGE HENRY FORRESTER. 

